SECCON CTF 2014 - Crypto 100 - Easy Cipher

07 December 2014

How to decrypt a simple multiple base character encoding ciphertext with Python.

Introduction

Easy Cipher was a cryptanalysis challenge for SECCON CTF 2014.The cipher below is a list of numbers, some of them are represented as decimal base 10 others as octal base 8, binary base 2 and hexadecimal base 16.Each number represent a character on the ASCII table, the goal is to turn the list of numbers into a string.